Denso Corporation

Naoto Yamashita

Masakazu Kouda

Shunichi Kubo

Fumihiko Hori

Masahiko Ito

Hisanaga Onishi

A battery system includes a plurality of battery modules, each of the battery modules has an assembled battery, which includes a plurality of battery cells connected in series, a monitoring unit that monitors the assembled battery, and an external member that is electrically connected to the monitoring unit. The monitoring unit of each of the battery modules has a generation unit that generates, based on an electric signal input from the external member, an identification information item on the corresponding one of the battery modules, the identification information items of the respective battery modules being different from one another.

Battery system

In a battery system including an assembled battery having a plurality of battery cells connected in series, each of a plurality of monitoring units includes a voltage classification unit configured to classify a terminal voltage between each pair of input terminals in the monitoring unit as a cell voltage or as a zero voltage that is a terminal voltage of substantially zero. The input terminals in each of all or all but one of the monitoring units include at least one specific terminal pair for acquiring the zero voltage at a different position and/or include a different number of specific terminal pairs for acquiring the zero voltage. Each of the plurality of monitoring units further includes an identifier generation unit configured to generate an identifier based on at least one of the position of the at least one specific terminal pair and the number of specific terminal pairs.

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Kariya, Japan

Naoto Yamashita